Action RPG that's easy to mod
GemRB is a portable open-source implementation of the Infinity Engine
Updated emulator of Forgotten Realms: Unlimited Adventures
Real-time RPG for PC/tablet/phone; multiple quests and random dungeons
IRB is a game creation toolkit
The second demo of my game engine.
plugin-based RPG manager in C++ and Qt5
A roguelike game engine/editor
A 2D Adventure Game & Engine
LAIR is a Sandbox Dungeon Crawling Game
A retro style video game engine for RPGs and adventure games.
Cross-platform port of Arx Fatalis, a first-person role-playing game
Cross platform 2D game creation framework with Python bindings
A turn-based strategy game in the spirit of Tactics Ogre